Lock.



E. HAHN.

LOCK.

APPLIUATION FILED 13130.12, 1911.

1,020,978. Patented Mar. 26, 1912.

EIVIIL HAHN, F NEW YORK, N. Y.

LOCK.

Specication of Letters Patent.

Patented Mar. 26, 1912.

Application filed December 12, 1911. Serial No. 665,212.

To all whom it may concern.' v

Be it known that I, EMIL HAHN, a subject of the Emperor ofAustria-Hungary, residing in New York, borough of ,the Bronx, State ofNew York, have invented certain new and useful Improvements in Locks, ofvwhich the following is a specification.

The object! of this invention is to provide a simple and effective lockin lwhich the bolt may be operated-from the outside of thedoor by meanso a key, and from the` inside without the use of any key.

For this purpose the invent-ion comprises a bolt-casing suitably securedto the door at the inside of the same, a' bolt adapted to slide in saidcasing and engage a keeper on the door-jamb, said bolt having alaterallyprojecting handle, and a guide-pin and operating-pln`projectino laterally therefrom through a slot'in thebolt-casing, avertical operating-rod piyoted at its upper end and extending at itslower end between the handle and the operating-pin, and means forrotating or swinging the said rod from the outside of the door.

In the accompanying drawing, Figure 1 is an elevation of the inside of adoor and its jambs, in rt, showing my lock applied to the door, ig.\2 isa horizontal section on line 2-2 Fig. 1,1Fig. 3 is a vertical section onan enlarged scale. through the lock and adjacent part of the door,l online 3 3 Fig. 1, and F1 Il is a similarsection show- 85 ing wmodieconstruction of the lock, as adapted to a. Yale or other barrel lock.

Similar letters ofveerenoe indicate correspondio parts in the diterentgures.

o the o or 9 ,is screwed or otherwise secured a bolt-casing or housing10, having a lono'itudinal slot 11 in its outer wall. Within t e housing10 is slidably guided a bolt 12, the outer end of which is adapted whenthe bolt is thrown to engage a keeper 13 secured to the jamb 14, 'andthereby bolt the door. lFromI the bolt a handle 1d projects laterally beond the casino' 410, thus permit-tingv the olt to be moved back andforth by hand at the insideof the door. Also from the bolt rojectslaterally and sub- 'stantially paralel with the handle, but at a pointnearer the nose 'of the holt, an operating-pin 16. The pin 16 projectsthroughl the slot 11 to the outside of the casino' 10, and by abutmentwith the rear and o? the slot. serves to limit the rear movement of thebolt, and by abutment with the forward end of the slot when the bolt isthrown serves to limit its forward motion. The bolt is operated by meansof a key havin a vertical operating-rod 17, pivoted at its upper end toa link 18, which is in turn pivoted to the shank 19 of the key, havingat its outer end a handle 20.

The operating-rod 17, link 18 and shank 1S) may be of plain round rod,or of any section desired, which is adapted to be entcrcd and withdrawnthrough an ordinary keyhole 2l of the door. Said keyhole is locatedabove the bolt-casing and bolt, and the position of the key-hole and thespacing apart of the handle and operating pin are preferably so arrangedthat the operatingrod normally hangs between the forward position of thehandle 15 and the rcarmost position of the pin 16, as shown4 in Fig. 1.Thus when the rod is inserted for locking the door, it will'by gravit-yassume a posisume a position in front of the handle 15. Y

The door is opened by inserting the key, composed of the parts 17, 18,19, in the keyhole, whereupon the rod 17 falls in position to engage thehandle 15. The key is then turnedby means of its'handle 20, whereby theyrod is swung in backward direction aga-inst the handle and the bolt isdrawn. For locking the door, the ke is inserted in like manner, butturned in the opposite direction, whereupon it engages the`pin 16 andmoves the bolt forward.

The link 18 may be omitted, but it is preferably employed inasmuch as itadapts the key to doors ofditferent thicknesses. In doors of ordinary orless than usual thiclb vness the link 18 falls in line with the rod 17,as shown in Fig. 3, .but in thick doors theA link 18 remains in linewith the keyshank in the key-hole, and the rod alone falls. The key iseasily inserted in and withdrawn from the door by reason of its pivotswhich permit it to bend for locking, and to assume lua under shocks tothe door. ilse improving the security ofi engaaeinent of the rod withthe handle, the handle i5 is inwardly tapered, as shown in Fig. 3, sothat onder the pressure of engagement therewith the rod 17 is retainedin inward position against Ythe easing-edge 22 and prevented by thehandle from dying outwardly under shocks to the door.

in Fig. 4- the housing 23 oi' the Yale other barrel lock is secured tothe door in any suitable manner, to the barrel 24; of the look issecured at ite inner end a head .in the saine relative position to thebolt` and its handle and operating-pin be fore described. The operatingrod 26 is pivoted t0 the head 25 inwardly from the outer edge of theeasing, before described with reference to the operatingrod i?, wherebythe guiding and reliable engazgfe` nient of the rod are secured. The key27 of the Yale look is inserted in the usual mann ner when it is desiredto bolt or nnbolt 'the door, and thereby the barrel inayvbe turned ineither direction, so that the rod 26 is swung either against the handleor against the operating-pimms the case may be, and the bolt Withdrawn,or thrown, as desired.

For preventing the bolt from being shaken out of position, and forsecuring the bolt against unintended movement, airistion spring 28 isemployed, composed of two parte, longitudinally arranged at the upperroedere and lower portions of the bolt l2, and between the saaie and thehousing` l0, and adapted to tiietionally engage the housing,

as shown in Eig. :2, thereby retaining the bolt with the desired degreeof security in the position in which it is moved, but not preventing theeasy movement of the bolt by the operating-rod oi the key.

elaini:

A lock, comprising a bolt-housing, a keeper, a bolt slidable in thehouslng and adapted to engage the keeper, said housing -15 having alongitudinal. slot, an operatingpin projecting laterally from the boltthrough Said slot to the outside oic the housing, aninwardly-taperinghandle on said bolt, extending laterally therefrom atthe saine side with the operating-pin, beyond the housing?, an.operating-rod, means for supporting the saine Aat a` point above theJon. MURTAGH, L. .tl/iUnrHY.

